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Chapters 1-5 Midterm
n/a
25
Chemistry
11th Grade
01/19/2009

Additional Chemistry Flashcards

 


 

Cards

Term
Rutherford
Definition
discovered nucleus through gold-foil experiment
Term
speed of light
Definition

c = wavelengh x frequency

 

speed of light = 3x10^8 m/s

Term
metric system base unit for length
Definition
meter
Term
metric system base unit for mass
Definition
kilogram
Term
metric system base unit for time
Definition
second
Term
metric system base unit for tempertaure
Definition
kelvin
Term
metric system base unit for amount of a substance
Definition
mole
Term
electromagnetic spectrum
Definition
all forms of electromagnetic radiation as a whole
Term
electromagnetic radiation
Definition
a form of energy that exhibits wavelike behavior as it travels thru space
Term
atomic #
Definition
# of protons in the nucleus
Term
Avogadro's number
Definition

6.022 x 10^23

 

# of parts in exactly 1 moL of a pure substance

Term
law of conversion of mass
Definition
states that mass is neither destroyed or created during reactions
Term
chemical change
Definition
converted into a different substance
Term
physical change
Definition
a change in a substance that does not involve a change in the identity of the sub.
Term
JJ Thompson
Definition
discovered electrons
Term
matter
Definition

anything that has mass and takes up space

 

 

Term
mass
Definition
a measure of amount of matter
Term
chemistry
Definition
the study of composition, structure, and properties of matter and the changes it undergoes
Term
density formula
Definition
d = m/v
Term
Aufbau principle
Definition
an electron occupies the lowest energy orbital that it can
Term
Hund's rule
Definition
each prbital of equal energy r each occupied by 1 electron b4 any orbital is occupied by a second
Term
mole
Definition
the amount of a substance that contains as many particles as there are atoms in exactly 12g or carbon12
Term

AMU (atomic mass unit)

Definition

1/12 the mass of a carbon 12 atom

Term
Pauli exclusion principle
Definition
no 2 electrons in the same atom can have the same 4 quantum numbers
Term
Millikan
Definition
discovered the mass of electons
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